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Finding the Fourth Proportional to 636.69, 947.94 and 627.59

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Solution

The fourth proportional to 636.69, 947.94 and 627.59 is: 934.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.69 : 947.94 = 627.59 : x
  2. Step 2: Convert to fraction form
    636.69/947.94 = 627.59/x
  3. Step 3: Cross multiply
    636.69x = 947.94 × 627.59
  4. Step 4: Simplify right side
    636.69x = 594,912.92
  5. Step 5: Solve for x
    x = 594,912.92/636.69
  6. Step 6: Final answer
    x = 934.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.